Call JS functions via native context instead of js builtins object.

src/code-stubs-hydrogen.cc

Index: src/code-stubs-hydrogen.cc
diff --git a/src/code-stubs-hydrogen.cc b/src/code-stubs-hydrogen.cc
index 0a48ad468eb3b8c37d7001e68e15239a0f7a89b0..3901ef8026c58fbff5f65cbf8e49efb604362482 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -2191,7 +2191,6 @@ HValue* CodeStubGraphBuilder<KeyedLoadGenericStub>::BuildCodeStub() {
         // KeyedLookupCache miss; call runtime.
         Add<HPushArguments>(receiver, key);
         Push(Add<HCallRuntime>(
-            isolate()->factory()->empty_string(),
             Runtime::FunctionForId(is_strong(casted_stub()->language_mode())
                                        ? Runtime::kKeyedGetPropertyStrong
                                        : Runtime::kKeyedGetProperty),